HLv2 Beta3 Magjack LED Luminance

[Takashi K]

Hi all,

Magjack LEDs are still a little bit dim, but not so serious.

I will replace 270 ohms resisters with 150 ohms.

73, Taka  ji1udd

[Steve Haynal]

Hi Taka,

Thanks for testing this. How hot does your 2.5V regulator U17 become with this modification? I am a bit concerned regarding the current draw from the 2.5V regulator and would prefer to run the ethernet LEDs from the 3.3V supply if possible. Also, the 2.5V supply is used primarily for the FPGA analog portions and I'd like to keep that as quiet as possible. Do you think you can test if the 3.3V supply can be used? Also, there are footprints for R131, R132, R133 and R134 to facilitate this experimentation.

73,

Steve

KF7O

[Takashi K]

Hi Steve,

> Do you think you can test if the 3.3V supply can be used?

I have verified the 3.3V operaion of LEDs.

There is no problem. LEDs and Ethernet work well.

I attached the schematic for modification, my modified mdio.v and LEDs photo.

When 330 ohms resistors were used for both yellow and green LEDs, green LED was a bit dim.

Therefore I used 220 ohms resistor for the green LED.

> Also, the 2.5V supply is used primarily for the FPGA
> analog portions and I'd like to keep that as quiet as possible.

I think this is the best solution for this issue.

73, Taka  ji1udd

[Steve Haynal]

Hi Taka,

Thanks for the modification! I will apply it and test this weekend. I'll release firmware and make this the standard configuration if all goes well.

73,

Steve

KF7O